| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.4%
|
| 0 | Less than one day | 0 |
0%
|
| 2 | 1 |
1.4%
|
|
| 3 | 2 |
2.9%
|
|
| 4 | 3 |
4.3%
|
|
| 5 | 2 |
2.9%
|
|
| 6 | 5 |
7.2%
|
|
| 7 | 7 |
10.1%
|
|
| 8 | 6 |
8.7%
|
|
| 9 | 3 |
4.3%
|
|
| 10 | 6 |
8.7%
|
|
| 12 | 5 |
7.2%
|
|
| 14 | 1 |
1.4%
|
|
| 15 | 7 |
10.1%
|
|
| 17 | 1 |
1.4%
|
|
| 18 | 2 |
2.9%
|
|
| 19 | 1 |
1.4%
|
|
| 20 | 4 |
5.8%
|
|
| 22 | 1 |
1.4%
|
|
| 24 | 1 |
1.4%
|
|
| 25 | 1 |
1.4%
|
|
| 30 | 5 |
7.2%
|
|
| 31 | 1 |
1.4%
|
|
| 32 | 1 |
1.4%
|
|
| 92 | 1 |
1.4%
|
|
| 110 | 1 |
1.4%
|
|
| Sysmiss | 929 |